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@ARTICLE{Syshchyk:825399,
      author       = {Syshchyk, Olga and Afanasenkau, Dzmitry and Wang, Zilin and
                      Kriegs, Hartmut and Buitenhuis, Johan and Wiegand, Simone},
      title        = {{I}nfluence of temperature and charge effects on
                      thermophoresis of polystyrene beads},
      journal      = {The European physical journal / E},
      volume       = {39},
      number       = {12},
      issn         = {1292-895X},
      address      = {Berlin},
      publisher    = {Springer},
      reportid     = {FZJ-2016-07862},
      pages        = {129},
      year         = {2016},
      abstract     = {We study the thermodiffusion behavior of spherical
                      polystyrene beads with a diameter of 25 nm by infra-red
                      thermal diffusion Forced Rayleigh Scattering (IR-TDFRS).
                      Similar beads were used to investigate the radial dependence
                      of the Soret coefficient by different authors. While Duhr
                      and Braun [P. Natl. Acad. Sci. USA, 104 (2007) 9346]
                      observed a quadratic radial dependence Braibanti ${\em$ et
                      al.} [Phys. Rev. Lett., 100 (2008) 108303] found a linear
                      radial dependence of the Soret coefficient. We demonstrated
                      that special care needs to be taken to obtain reliable
                      thermophoretic data, because the measurements are very
                      sensitive to surface properties. The colloidal particles
                      were characterized by transmission electron microscopy and
                      dynamic light scattering (DLS) experiments were performed.
                      We carried out systematic thermophoretic measurements as a
                      function of temperature, buffer and surfactant
                      concentration. The temperature dependence was analyzed using
                      an empirical formula. To describe the Debye length
                      dependence we used a theoretical model by Dhont. The
                      resulting surface charge density is in agreement with
                      previous literature results. Finally, we analyze the
                      dependence of the Soret coefficient on the concentration of
                      the anionic surfactant sodium dodecyl sulfate (SDS),
                      applying an empirical thermodynamic approach accounting for
                      chemical contributions.},
      cin          = {ICS-3},
      ddc          = {530},
      cid          = {I:(DE-Juel1)ICS-3-20110106},
      pnm          = {551 - Functional Macromolecules and Complexes (POF3-551)},
      pid          = {G:(DE-HGF)POF3-551},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000396919700001},
      doi          = {10.1140/epje/i2016-16129-y},
      url          = {https://juser.fz-juelich.de/record/825399},
}